[Elecraft] Good length for portable antenna

[Victor Rosenthal 4X6GP]

I would like to thank all who responded on and off the list. What I will 
do tomorrow is use a 5m radiator and a pair of 5m counterpoise wires, 
for operation on 20 and 17m. That way I won't have to expand the pole 
too much so it won't scare the teachers! For a permanent antenna that 
will allow operation on more bands, I will use an 18.2m wire as the 
radiator and several counterpoise wires of different lengths.

Yesterday I tested the short configuration on my roof, in a not-so-good 
spot near the solar water heaters. I worked several Russian stations on 
20, so I am set to go.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
http://www.qsl.net/k2vco/

On 7 May 2017 10:24, Victor Rosenthal 4X6GP wrote:

> I'm taking my K2/10 to a school on Wednesday to do a demonstration. I
> have a 10m fiberglass pole, and my plan is to hook a wire to it and
> either lean it against something or bungee-cord tie it to a bike rack or
> whatever is there. I will deploy a counterpoise wire on the ground.
> Given that it is the middle of the day, I will probably try 20 or 17m,
> or maybe 15 if it sounds good.
>
> My question is: what is a good length for the wire that will slope from
> the pole to my K2, and what is a good length for the counterpoise? The
> K2 has the internal tuner of course. The pole doesn't have to be fully
> extended.
>
> I intend to say "imagine that there is an earthquake and we are cut off,
> phones don't work, etc. Watch how quickly I expand this pole and get on
> the air (etc.)"